0X Exchange shuts down v2.0 contracts due to potential exploit; deployed patched versions

0x, an open protocol that enabled the peer-to-peer exchange of assets on the Ethereum blockchain, shut down their v2 Exchange due to a flaw in its Exchange contract which was identified by a third-party security researcher Sam Sun. According to the CEO and co-founder of 0X Will Warren:

“This vulnerability would allow an attacker to fill certain orders with invalid signatures. This vulnerability does not effect the ZRX token contract; your digital assets are safe.”

This vulnerability in the 0x’s Exchange contract could have had a detrimental effect as it could have been used to validate signatures, canceling or conducting orders, conducting transactions; however, to limit the harm, 0X shut down the exchange contracts and asset proxy contracts, that are responsible…

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